Haha, ahh cheers!
If I'm honest, the reason I used 'em is 'cause at the time I didn't have a proper keyboard. But I don't think they sound too bad. I mean they're a bit of a shock initially, but they eventually blend in well, which is a good thing. And yeah, I think they give it a bit of a bounce. The tune's a wee bit dour, so I think it keeps the full band version from getting too downbeat. Aha, I'm glad that's gone over well!