I didn't even think about saving the e-Gacha tickets, but out of three tickets I wound up getting both the Alpha and Beta R slayers anyway (and a new R when slayers didn't show up). The toughest part was deciding between one of the slayers and a new SR non-slayer that I liked (Nodoka Otomo). Of course I made the right call and took the slayer, but it was a painful decision. That and the Beta SR slayer from the shards event should put me in a pretty good position for this Gambit.

(Also, taking over 120 tickets to get the N slayer is why I don't spend my pero until I need to.)