Yeah, plenty of people do. Also several on this forum.
A DIY jig will work. I used one for several years. I took a roller cutter/trimmer (that I already had), made a frame to suspend the roll from and clamped everything in line with each other so I could pull paper from the roll into the trimmer, against a stop I clamped to the table to get the desired length, and then cut the sheet. Put sheet into light-proof bag and into a box. Hey presto. You get pretty fast at it with some practice.
A dispenser is nicer, but they come up for sale only once in a blue moon.
And a regular enlarging easel will be fine for your self-cut sheets. The last sheets from the roll will curl quite badly, but if you leave them in a stack inside a box, they will flatten out a bit. It can help to weigh down the stack of cut papers in some way to facilitate this process. The curl is not much of an issue during exposure as any regular enlarger easel will hold the paper flat just fine. It's a little more problematic during processing depending on the approach you use. It's not much of an issue with drums, but if you use trays or a roller transport processor, the curl can be an issue. However, I've always found it manageable regardless of what I was doing.
Note that Kodak ceased making paper several years ago. Today in Europe you'd buy Fuji. The equivalent to the Royal paper in your picture would be plain-Jane Crystal Archive:
https://www.originalphotopaper.com/products/ca/ I recommend using
DPII as it's readily available in many roll lengths and an excellent product overall (much better than plain Crystal Archive!)