I think they should work fine. I like some mids in swampash guitars and the Stockholm has enough. According to what Nolly said in an earlier thread, the Stockholms can handle downtunings very well. P90's always have a bit more noise then hb's, but I never had much problems with them and I had a few p90-guitars. Btw, the clips of the Stockholm are quite impressive. I would be tempted too. :)