All high-quality holsters are made for individual pistols, and generally cannot be used with something else.
Many cheap, poorly-made fabric holsters are "one size fits all."
My experience leads me to suggest that you are going in the wrong direction.
You own two fairly expensive pistols, but you want to skimp on their holsters. That seems foolish.
I strongly suggest that you invest at least $100.00 in each of two well-made and properly fitting holsters made specifically for the guns you own. I also suggest that you spend a further $50.00-to-$75.00 on a proper, stiff belt on which to carry them.