Yes, CB, they are American-friendly. Likely to remain so too, I should think, because they are outside the US and they are not a publicly-traded company, so not under pressure.
They have a rather unique system whereby your rake is refunded (I believe once a month), so their games wind up being free of charge. I understand that they are a pretty big sportsbook, and that the profits from that fund the poker room, which is a minor part of the operation.
As Nickzz has pointed out, the downside is low traffic. I just checked out some independent traffic reports, and it looks like their normal peak is around 600 players at any one time, which makes it less than a tenth the size of Titan, Bodog