I usually like to wait and let others pile in with opinions first, but I'm here now, so what-the-heck.
It's the TJ model Trektop that does NOT flip back (Sunrider style). I'll make that more clear on the web site.
Pluses for the Trektop: simplicity of design, clean looks, tight fit over the sports bar. Now has tailgate bar -- lets you open tailgate when top is on.
Negatives: side windows are fixed, fewer options (can't go with top on, but side panels off, can't flip back the top on a TJ).
Park City powder will not be a problem.