I bought some Freerides…then took them back…I couldn’t get a secure clamp with them…bike was held in place but if I gave it a dunt (like a sudden braking movement or something), I could get the bike to jump out the clamp.
Mine is a large (18.5″ frame) 09 Marin Mount Vision, very similar frames…the clamps didn’t seem to come in contact with enough of the frame.
My bike has a 15mm QR so the only rack I could find was the Pendle single roof carrier with 15QR adapter (they do standard QR/15QR and 20mm adapters) – I think Thule have or are about to release one (when I called 2 years ago I was told there was no demand for a 15QR system).
The Thule Proride just doesn’t work – I honestly don’t understand how anyone can get a Thule clamp to fit in the space between downtube/seattube and shock mounting – only way I managed it was just the tip and again that didn’t hold it enough. Looking at the Mont Blanc system the clamp jaws also don’t face each other…it could lead to twisting and the frame coming out – the twisting bit happened to a previous bike of mine and was ripped from the bike rack…
I had a look (but not tried) the Mont Blanc system and it looked like it would be very similar to the Thule Freeride rack, so I didn’t bother with that. The main issue was that the clmaping area wasn’t deep enough to clamp much of the downtube (due to the shape created by the shock mount)…so the very ends of the system clamped but nothing else touched.
I’m not saying this can’t be done, just my findings suggest the bike is not held securely in place.