More of a concern is getting it rammed between small chainring and the chainstay, gougeing the shit out of it and making you wonder whther you’ve borked your frame.
I’ve got one that came with the dekerf that looks does the trick but looks very home made. 2 to 3mm (2.5mm??) ally plate with hacksaw cutouts per chainring, 2 threaded inserts in frame and 2 oversized holes in the plate + washers to allow alignment with chainrinrings before tightening. Does the trick lovely.
Edit: missed the last post between starting mine, answering the phone, and finishing. I’ll post a pic of mine when I get home, if I remember!