same again,
i've used 3 types, the old British army 58 style(green), a german rubberised one, and the one i assume you're looking at the US army version.
i am about 5'11-6ft and have always found the poncho a little short as a shelter, but when used with a liner as a sleeping bag, it's fine.
you can get a thinsulate liner rather than the standard item, which is far superior!
as for a clothing item, only in the backwoods would i wear it, especially a camo one!
you can adapt the liner by adding a head hole so it can be worn like a ....what's the word....a poncho!
also you can add a zip around the liner which helps it stay warm.
but.....
i am considering chucking mine, for a few reasons:
1. i haven't used it either as a coat or shelter for years.
(there are much better systems)
2. it is a very overtly military which is an image i don't want.
(though you can get green and black US ponchos.
3. as i said, it is a bit small to lie under, i prefer the British army basha.
4. so you have your shelter set up to keep your kit dry, but it's raining hard and your poncho is also your coat how do you keep dry?
5. the pocho /liner system for sleeping was designed designed around the Veitnam war era, thus the system is designed for tropical conditions, not temperate!
the liner is worth prehaps 1 season(in sleeping bag terms).
6. because the poncho isn't breathable, you will sweat in coat mode and sleeping bag mode.
like many others i have used my trusty poncho for years but take a good look around before buying, there are alot of good systems out there!
i shall try to find some interesting links for you!