[Clown Plecos and Swords]

Hey all! I know (and have experienced) bristlenose plecos eating amazon swords, but I'm wondering if the same is true of clown plecos? In general, does this just apply to amazon swords or other varieties, including the melon sword and the red flame sword?

This is a picture of the pleco in question by the way. I've never gotten a solid confirmation on his specific type, but I'm assuming clown pleco (I was given this fish, originally bought from an LFS for $50)? There is one other pleco in the aquarium that is definitely a clown pleco.

[Pleco ID?]

Any idea what kind of pleco this is? The guy I got it from didn't remember. He did say that he paid about $50 for it, but our local fish stores are known for being super over-priced.