Im in the same boat about being nervous to flash a custom rom. 3 years with pocket pcs, and the only one i ever did was sprints official rom to enable revA and gps on our moguls. : )
Heres my question. If i unlocked my TP and flashed a custom rom, is there any chance i could possibly go back to my current stock rom and resore to my current state? I think id take the jump into flashing if i knew i could always go back to a previous setup. Maybe i should just go practice on my spare mogul