Interesting fish stevie! I do have a softspot for catfish myself.. and that particular one could work well in a south american themed 50 gallon. Does say they're nocturnal though so I'm not sure how often you'd see it!
Another couple of angles for the driftwood theme, a south-east asian tank could work with a couple of types of the less nippy barbs (cherry barbs, ruby barbs etc), rasboras, gouramis, glass catfish etc. Also a west african tank could work, with butterfly fish, congo tetras, and kribensis.