Quick are you using a belt? If so you will just die slower, those things suck the life out of you if you where to fall[X(]
I just usea freebiebelt that came withone of myhanger stands. I fell once with it and it saved my hide. Iwas easily able to re-position the platform and get back on it. I didn't suffocate, but it definitely didn't feel good. Maybe once I get old, weakand brittle like you, I'll need a full harness with the vest and all the trimmings.