This has been discussed before; after a previous can/can't discussion I went out to the shop and tried it on a fully assembled 727 on the bench....ain't no friggin way that band was coming out regardless of what some said they had done.

Then it dawned on me, some bands might be different. That's the advantage of having shelves full of parts, a quick check of the new/used flex bands I had showed .080" difference in the thickness of the band anchor ends. (widest was .630", narrowest was .550") Factor in the probable difference in case dimensions and the correct answer is....some can, some can't.

I only had 5-6 bands to compare, maybe there's an even bigger difference when comparing all the various brands.