Long answer to your question:
I had the bike and used it doing all the crazy things mountain bikers do. Well, 6 weeks ago, I had a bad accident on it - fractured my neck, injured my shoulder. Got helicoptered out, spent 2 days in an ICU. Also, the MRI's showed degenerative condition in my neck. Had a lot of time in the hospital to think, and decided to give up mtb-ing (at age 51, it's about time). The Cruzbike allowed me to exact some poetic justice on the bike that tried to kill me. I neutered and turned it into a recumbent , which was better for my neck.

I like the Cruzbike setup overall. The FWD is very intriguing and offers some bio-mechanical advantages. I think it makes for a nice touring setup - comfortable for long range cruising. However, you're right, the combination of the full suspension bike, plus the 9 lbs that Cruzbike adds add up to a heavy bike. I have too many hills around here for that. My own riding style is more sporty recreational. I do like to go fast. So, what I have decided to do is to take the Cruzbike kit off the mtb and put it onto my Downtube folding bike. This would give me a 27/28 pound 20" mid-racer. Plus, I think I can preserve some of the folding features. Gonna get working on that asap. Oh boy, another bike build project !

Sorry for the major thread hijack. I'll start another one on the folder conversion.