Congratulations on the New addition to the Family
Did you get the 4" or the 6 1/2" version?
I have been using moon clips from Ranch Products for decades. They work great and they are reasonably priced.
I will usually sit watching the news a day or two before shooting and load up 20-30-40 clips and drop them in my shooting bag
A few days after shooting, I will de-moon while waching the TV
I tried RIMZ years ago and was very dissatisfied with them.
If you drop RIMZ on the floor, ammunition comes out. If you try to carry a couple in a jacket pocket, ammunition comes out. I MUCH prefer the solid grip that real moon clips have on ammunition
In 40 years of using Metal moon clips I have never had a round pop out of them