Hmm, if the Protector Trials are on sale I'll definitely grab them (unfortunately, my copy of BS2 is not currently in my possession). Not only did I stick with my preferred weapon/plasmid combo throughout the game, but once I got the Drill Specialist tonic I switch to exclusive use of the drill and never went back (strangely addicting, that drill). So the P. Trials sound like they'd be an interesting challenge, especially if they only cost a few bucks.