You'll be entirely mobile during both demis, Titan, and like 80% of Garuda. Likely Swiftcast will be used for one of the 2 Ifrit long casts before the instant melee combo. Summoner won't even be a little bit heavy on hardcasts, you'll be able to move freely for the bulk of the 2min cycle. Might even be able to fire off the Ruin 4s exclusively in raid buff windows if timings work out, because of all the on-demand mobility baked in to the entire kit.