Which Glock Tier 1 Concealed Holster to Get?

I have a Glock 17L, Glock 17, 45 all with Surefire X300, Ideally I’d like a one holster for all three guns Appendix IWB. Do yall recommend getting 3 separate holsters or getting 1 for 17L and using it for 17 and 45 as well? Thanks for your time.