Hmm, Im not seeing the original eReader.com App which allows you to read protected PDB files from eReader.com / Fictionwise.
While' I've not seen it in the Android Market it can easily be downloaded from the
eReader.com website and installed on any android device (which allows you to install apps from outside the market of course)
Also for Comics I'll like to Mention
Comic Reader Mobi which allows you to read ZIP, RAR, CBR and CBZ files. While it was only recently added to the Market, Its been available for a while outside and was available earlier on the iPad.
While It's expensive, I've found it invaluable on my iPad (though it is no longer available except if you jailbreak)and will be getting it for my Android as well as none of the other readers I've tried so far have have that same combination of features.
It may be worth heading over to his site to have a look at the features, and have a look at the Demo he's set up where you can see how your files will look on your screen before plunking down the cash.