Used the OTB Abyss (green) for the first time last June.  8 days.  They worked great.  I wear size 10 shoes and purchased size 10 booits.  They were comfortable enough wearing coolmax liner with smartwool crew and all the inserts.  No blisters or crinkled foot problems (Gold Bond each evening worked well).  They were especially nice on the portages...sturdy and gripped well, and no longer did I worry about dodging ankle/shin deep mud...just plodded right through.  As with any boot, there were some slippage on wet rocks/granite slabs.  A coiuple days, I also tried the 11-inch Cabela's gore tex socks with the coolmax liner, smartwool sock, and one less insert.  The only reason my socks got wet was due to sweat...it was noticably warmer with the gore tex.  For dry-footers, this is an option as long as you don't go over shin-deep water/mud.

The boots were generally dry by the next morning provided a few hours of sun was available.  The interesting thing was you could really feel the coolness when wearing them in the water...felt good after a tough portage.

Definitely recommend the Abyss boots, and will follow up again after my lengthly solo starting next week.