All you 40S&W 180grain guys need to pay attention to the bullet set-back tip.
So far I have not seen an ankle holster that works without a snap. Maybe I just have not seen it. Ankle holster is not my preferred carry, but sometimes its the best option. That aside I agree with your holster points.
Experience hath shewn, that mankind are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed.