"...in your opinion does it provide any 'impact' protection? ... I'd love to have both worlds- a case that I can flip the lid up and go to work but also a case that would give me some protectiona against damage. Maybe I'm asking too much? ..."Here's my experience, FWIW:
I've been using the EB Cases Slipper III for my TRG Pro and then my HE330 for over four years now, and they have both survived many drops onto hard surfaces from table-top or higher heights. I've had them hit flat, edge on, end on, and on the corner, and never a problem - my pda's came through just fine.
Even after 4 years of hard use, the case still looks great and is in good condition.
I just ordered the new Slipper case designed for the HE330 b/c I want to be able to use the jog dial and button. I'll let you know how it works.
Good luck, whatever case you choose!
Greg