Degoey, the problem with a lot of 7 strings is that a lot of companies jumped on the bandwagon during the Nu-metal craze. The Les Paul is simply not suited to 7 strings. The shapes wrong and the neck is too thick.
If they'd thought about what they were doing and maybe done an SG with a shallow neck then it may have been more successful, instead of disappearing without a trace like the LP 7 string. As a bit of a no-brainer, the LP is well suited to baritone set up, and the LP baritones they brought out were much better received.