Orient Express - Cheap Chinese Rims / Wheels / Forks / Frames / Cranks / Etc

Dunno about that one.

I've bought this Carbon one. Its not snapped and disappeared up my arse yet, so all good:

http://www.ebay.co.uk/itm/Hylix-Super-Ultra-light-Carbon-Seatpost-31-6-410MM-178g-Black-/121119587312?pt=US_Seatposts&hash=item1c334a3bf0#ht_2412wt_1424http://rover.ebay.com/roverimp/1/710-53481-19255-0/1?pub=5574889051&toolid=10001&campid=5336525415&mpt=[CACHEBUSTER]http://rover.ebay.com/roverimp/1/710-53481-19255-0/1?pub=5574889051&toolid=10001&campid=5336525415&mpt=6050979http://rover.ebay.com/roverimp/1/710-53481-19255-0/1?ff3=2&pub=5574889051&toolid=10001&campid=5336525415&item=121119587312&mpt=5875701http://rover.ebay.com/roverimp/1/710-53481-19255-0/1?pub=5574889051&toolid=10001&campid=5336525415&mpt=[CACHEBUSTER]http://rover.ebay.com/roverimp/1/710-53481-19255-0/1?pub=5574889051&toolid=10001&campid=5336525415&mpt=6050979

That one's sold out. But how about this one?
http://www.ebay.co.uk/itm/Hylix-Carbon-Seatpost-Road-MTB-27-2-400MM-175g-Zero/271032839316?_trksid=p2045573.c100033.m2042&_trkparms=aid%3D111000%26algo%3DREC.RVI%26ao%3D1%26asc%3D20205%26meid%3D4922339285811500895%26pid%3D100033%26prg%3D9064%26rk%3D2%26rkt%3D4%26sd%3D171242729541http://rover.ebay.com/roverimp/1/710-53481-19255-0/1?ff3=2&pub=5574889051&toolid=10001&campid=5336525415&item=271032839316&mpt=[CACHEBUSTER]

Understated design. And I am intrigued by the sideways fastening mech. It should work on normal saddle rails right? Unless there is something I've misunderstood?