I have taken the casing off my acer monitors and its not really all that difficult. you just have to be careful. it is worth the thinner bezels
I'm pondering doing it with my 245BW's. Only thing at issue is making sure the sheet metal shielding on the rear pieces is properly mounted and dealing with VESA screw mounts. The VESA screw mounting will kill my warranty on the displays even if I keep the bezel plastic because I'll have to drill mount holes in that metal sheeting. As they're outside of warranty window anyways I'm not too bothered by it. I do want to mask off the lcd and hit the shell with black paint.