Thanks for the quote (and the compliment) Jerry!
I really can’t see that a Lysander floatplane would’ve made much sense, and a floatplane Gladiator even less, particularly as the Germans were using Bf 109s and 110s.
FWIW, just as an uneducated guess, the engineering would be fiddly buy possible, but the performance awful on the Glad, while the relatively over-engined Lysander would do better, but was always vulnerable without fighter cover.