In a recent Pathfinder campaign I'm playing in, the GM mentioned 'The Knights Gryphon', an ancient order of knights which was outlawed, disbanded, and 'recreated' as a mercenary army by the king in years long past. That struck up a chord which reminded me of an old 2e character that I've always wanted to get more mileage out of. Unfortunately, I can't seem to find any way to create a gryphon-riding knight of any sort.
The current concept would be a spellslinger, gryphon-rider. Perhaps the last scion of the line of the old Knights, still on the run. I was initially thinking something based on a Paladin, because they're classically associated with having a mount, but that's been a dead end. The closest I've found is the 'Sky Stalker' ranger archetype. I could easily re-fluff the hippogriff as a gryphon with no real issues, but I'm wondering if there's any other/better ways to get a similar effect.
This is less of a character-optimization question than a 'how can I do this at all', but notes as to the best route to go would be appreciated. I had a discussion with the GM this weekend, and he's OK with the 'Sky Stalker' route, but I'd really prefer an arcane-caster based build if at all possible. Are there any arcane classes which provide a 'mount' feature I could use to qualify for 'Monstrous Mount'?