Funny that you should post him. I was just listening to the last Haunted album an hour ago in my car and thinking how it is not nearly as good as the albums before Ola joined. I'm pretty unimpressed with his stuff on their last two albums. And it caught me completely off guard! I was really excited when he joined.
That guitar is killer though. Tone is great.
Edit: It's not that he isn't good in The Haunted. His solos are good and his tone is good. But they're short. He doesn't really dig deep either, kinda plays it safe.
It's good to see his guitars getting some use rather than just being prizes on someone's wall. But in saying that if I owned them I wouldn't let anyone near them