Looking at the available modules here on bible support for Pocket e-Sword they are in the same format as the files for use with e-Sword 8 and earlier
Simple Bible Reader does have a conversion option for e-Sword 8 which will take an e-Sword 9 dictionary module such as a dictionary module with a dctx file extension and convert it to the e-Sword 8 dct file format. This should allow the module to run on both e-Sword 8 and Pocket e-Sword as both use the dct file format.
I've only tried the one module on Simple Bible Reader (SBR) and it was Thayer's Unabridged. The option I tried it with was eSword v8, and it wasn't accepted by Pocket eSword.
My PPC is a HP iPaq 214 and still has the same or similar tremendous battery life since I bought it back in 2008. It's a lot more robust and portable than my MS Tablet on journeys that are not work related, and is outstanding for note taking handwriters like me.