The FOMA I have been using in 120 has a Sticky label with a Yellowish backing paper. You can peel off the backing and the label then sticks. It does take a bit more effort to break the label in the darkroom particularly if you only peel the "far end" and the double thickness ends up at the location you want to tear.
For the record, the Foma and Arista.EDU Ultra both have that self adhesive sticker.
"Often moments come looking for us". - Robert Frank
"Make good art!" - Neil Gaiman
"...the heart and mind are the true lens of the camera". - Yousuf Karsh