Slight thread necro...

The Montague Paratrooper works extremely well for what it is. Once I replaced the cheez-ball parts on mine, anyway.
Sure, it won't fit in an airline approved no-extra-charge suitcase, but I've carried it around in the trunks of several cars, minivans, and a Cessna 172 without any real issues.
I've done the same with non-folding bikes, yeah, but with a bit more time with disassembly and reassembly.

It's been a good bike. Not as lively as the Cannondale I sold a few years ago, but I kept this one instead of the C'dale for its portability and the way I travel.

Now, I'm starting a new job that involves airline travel. I'm down to just under 315 now, and hope that, by spring, I'll have a far greater selection of folding bikes that I *can* check as luggage.
Sarge would then be sorta out of a job then, and I may start looking for a good frame for those upgrade parts... unless I can get a good price for it whole.