Technically it's a cross between a 335 & 345. The Ebony FB is unusual. I;m with Jolly on this. Don't really care for the black binding. Other then that its a real nice guitar. The 57 classics are very very nice also. I have a 359 that has the same pickups in her and she really rocks. The 335 is a vary different guitar then a Les Paul. If you are doing a straight up trade its not a bad deal. I know you are mostly playing blues and I think this would suit you well, but it all comes down to $ and how comfortable you will be with it. I own a Les Paul(2 actually) and a 335. The Pauls are great guitars and for many things the Les Paul sound is necessary, but I would much rather play a 335.
Volume also comes in to play. If you play loud and are playing on a small stage the guitar can give you some problems. It can squeal a bit if you are standing right on top of the amp. A Long chord and distance is really all you need to fix this though. great guitar!