The HMG Seraph is incredibly fun to use. You can get some interesting angles on your opponent. I ran a list yesterday with an OS link including a FK ML + OS HRL for ARO duty and the aforementioned Seraph. The FK did some incredible work on my opponent's turn taking out pieces, always laying down templates on high numbers. In my active turns I used the Seraph to take out key pieces. It makes for a nice hammer and anvil strategy.