BlueLounge is probably not the only place that sells
cable management (they have some other stuff, too) gear, but they have the
Soba, which allows you to shove multiple wires into one sleeve and can do a lot for saving face. My only gripe, having used Soba before is that (like many braided cable-type things), when you cut it it frays. I haven't tried taking a lighter to it to see if that helps it cinch back up like a lot of nylon based stuff will, and it's something that will be out-of-the-way in most cases, but it just didn't feel very 'premium' to have to deal with that.
I almost bought from their site and ended up finding a lot of stuff 50% off on Amazon sold
by them, so definitely shop around if you're getting their stuff in particular.
If the fraying bothers you and a lighter/heat gun doesn't fix it, there's probably some sort of grommet you could get to cover it up.