I have Den's UpLula-K loader for my Kadet and use it ALL the time, I mean like 30k rounds worth so far. I can't hardly load a Kadet magazine without it.
I've never used a magazine loader with any of my 9mm's. Easy to load by hand. Ditto the McCormick single stack magazines for my one-and-only token 1911.
The double stack 97 is different. I cut my thumb on the magazine lips the first time time out with the new gun, the first time a round slipped off the top of the loaded round while trying to load the magazine. Then I did it again the second range trip. Put a band aid on the thumb before the third time. Ripped up the band aid in one range trip. There is a problem here, a shooter problem.
I ordered a standard double stack Uplula and got it in Friday. The tongue on that thing is something my Lab would be proud of, compared to the -K version! Will "test" it on Sunday. Will eventually pay for itself in band aid savings, I think, LOL. I might also smooth off the edges of the magazine some, just in case I forget or loose my UpLula.
I might even clean the blood stains off the left side of my new 97. Sometime.
This is fun (if one is willing to learn and adapt).
Joe