[TowerTalk] Cable safety climb systems

[Christopher J Galbraith]

Hi gang,

Does anyone have experience with cable-based safety climbing systems such as
Trylon's Cougar system?

http://www.trylon.com/safetyclimb/cougar_safetycable.asp

Or DBI/Sala's "Lad Safe" system: 

http://www.capitalsafety.com/Default.aspx?tabid=33&mid=379&ctl=Details&Produ
ctId=309

Basically, a steel cable is permanently attached to the tower with brackets
and a special locking, cable sleeve attaches the climber's harness to the
cable, ensuring tower attachment and fall arrest protection 100% of the
time.  

It looks like a good idea, but I would appreciate any comments and caveats
from experienced climbers (and/or users).  We are looking at it specifically
for use on a roof-mounted 40 ft Rohn 55G tower.

Thanks!

73, Chris KA8WFC