Yes, I do.
I imagine that you have in mind the whitemetal two-bolt chairs that plug into wooden sleepers cut to 16mm sizes. This forms a traditional type of track that has served well provided the sleepers don't rot and the holes are the right size for the species. The barb makes a treated softer wood a better bet than a rock-hard one.
Digression about Cliff's plastic sleepers. in case anyone is keen to lay Standard Gauge track and wonders whether Cliff's will accommodate visiting narrow gauge and/or G-Scale.
There's a pleasant surprise in that - unlike most brands of standard gauge track - his Code 180 on 1:32 scale chairs will accommodate all but the most boorish G-Scale wheels! Counterintuitive, but it's because the true-scale chairs are so small that they miss the giant flanges.
Cliff offers gauge-widened sleepers for curves, and these are well worth having to reduce flange binding.
Cliff is keen on the benefits of stainless rail - which is lovely stuff except for:
= hard to work. Nah, you look big and strong :-)
Be sure to pre-curve the rails, even on wide radii - especially the ends, and especially if you imagine using the flimsy plastic fishplates. Otherwise the phrase 'dog-leg' will come back to haunt you after a couple of winters.
= looks horribly like stainless steel,
which Cliff can fix with an acid potion that rusts it ("stainless stains less", rather than not at all)
= very slippery.
which means that expansion and contraction with the seasons causes the rails to 'creep' through the chairs - just like full size: huge gaps can open up and crossings can be closed up, both causing derailments.
Fixing the track down is fun, because the sleepers are SO delicate. The tradional woodscrew through the middle of the occasional sleeper is a recipe for bending the sleepers U shaped, which narrows the gauge and pings stock up in the air. Screw through clearance holes at both ends, with a deliberate bit of up-and-down movement allowance, is much better.
I've no personal experience of loose ballasted Barker track, but a friend has done it - and with True Scale flanges only 1mm deep. I'd be very temped to use traditional battens under the sleepers, but then the problem of fixing down rears it's head again.
Either way you need a solid sub-base because the rail is only one third as stiff as traditional Code 250 rail, and because the tiny chairs don't have massive grip on the rail.
Switch and crossing work is eased by Cliff's ready-machined switch rails and cast crossings. The standards Cliff uses are suitable for the bulk of standard and narrow gauge wheels - but not all.
Depending on your flanges, you may have to grind the flangeways a bit. If you want fabricated crossings, be sure to solder it all down to a solid piece of sheet metal, unless you are installing inside a heated building. You cannot rely on the little plastic chairs to maintain the flangeway widths in the face of expanding and contracting metal rail.
Cliff's cast tie bars need treating with respect commensurate with their delicate appearance - or replacing with simpler, sturdier and cheaper ones.
A final thought - bullhead has a Right Way and a Wrong Way and is worth getting the right way up, if only to avoid being teased about it :-)
So: it's a quality product range that needs gentle handling and regular tweaking (rather than full-blooded maintenance), especially after winter. At least you shouldn't get degradation of the materials.
Here's his Products page:
http://www.cliffbarker.talktalk.net/gauge1products.htm
David