Wallet is awesome! In fact, i just used the "Autofill With Wallet" function of the safari extension to login to macupdate just now, on my new iMac running lion. I'm quite impressed of how often it seems to "just work" actually. In my experience, it also offers to save the login information most (if not all) of the time, when a website haven't yet been added to wallets database.
The developer just released an update to support Lion, which shows Wallet is still in active development. In fact, it's updated quite regularly it would seem. Not so often it's irritating, but often enough for bugs to be ironed out, and to show it's still in business :)
I have it synched to my iPhone, also running wallet, which has saved me a couple of times, when i needed access to a few sites that are password protected, on the go.
Wallet has a perfectly passable application icon, and the UI in general is quite well put together IMHO. Good work mr developer :) Looks is important, at least to me!
Last, but not least, this is one of the very few applications that offer a trial/demo of the application, before buying it from the MAS. Very nice IMHO! I wish more developers did that.
Perhaps the developer doesn't answer support emails, i wouldn't really know, because i haven't yet had the pleasure of sending him/her/them a support request. So i can't help you there, i'm afraid!
In short, if you can be without firefox integration, and looking for something cheaper than 1password, wallet is certainly worth a try IMHO.