I guess nobody read my
thread.
I actually sell proclip, so if you buy direct, you're wasting money. Just saying.
I'm using the innocase currently (though it's not up to Seidio's normal standards) and picked up the adjustable iphone holder. If you're going with any sort of case on the Evo, it is the way to go as ProClip will not make an Evo holder for anything but a naked Evo. And at this rate, the adjustable will fit a naked Evo and give you the option to add a case later, switch to another phone and so on. I see no point in buying specific phone holders since many of us tend to jump from phone to phone every year.
The only plus if you have a naked Evo is the possibility ProClip gives the holder a fuzzy coating. They don't seem to always do this, so you just don't know. But the soft touch finish on the Evo shouldn't have issues with their regular holders.
A couple more things. The HD2 is thinner. Do not buy an HD2 specific holder. Typical cheap adjustable holders are just crap. They are so deep that the phone almost seems lost in them (namely, the one mentioned by Biles as well as Bracketron's). You have to squeeze and release every time the phone goes in and out. And you just get what you pay for. They also don't always have the AMPS mounting holes in the back if you choose to mount it properly and not to your windshield or vents.
My recommendation would be to go with
ProClip's adjustable holder, and you can read more about it in the thread I linked above. But of course, I have a built in bias. Even if I didn't, I just don't believe in junking up the car with cheap mounts and holders. I want things to look as clean and OEM as possible. Also, the adjustable holder does not interfere with any of the buttons.