lol no way.. if everything is limited like this then it doesn't encourage much to get the best gear possible on the each update. You get all the allagan iLV 90 gear to benefit them only once a week during Coil of Bahamut only, and then it won't benefit you on the remain of the content for the rest of the week... totally no to me.

because you can only try Coil of Bahamut once per week, it only take 1 hours of static PT. so you can actually benefit your end-game gear for 1 hour per week, it is really bad encouragement. (well.. may be I guess casual players just want to forbid hardcore players from having any advantage I guess)