I would probably run the bike more if it had the spitfire option. As of yet I haven't been pleased with its performance for its cost. I've always had to hold it back for way too long for other pieces to do the work for it to do its job and at that point it's nice but not terribly necessary.
I've started playing for real over the summer, and this is a favorite tactic of mine that's worked decently well so far. Running a Montessa biker up one direction, and using a Seraph from another. I haven't done many (if any) ITS missions yet or won all my games, but it was certainly fun!
Not gonna lie - I wish they found a way to let him keep his old BS14 on top of a little discount. BS13 just doesn't cut it for a PanO knight. Having that last point of BS that allows you to never miss a (MODless) target in the open with that BSG is just the pip of reliably it would take to run him.