Originally Posted by
JTQ
Because it really isn't a concern for most people (certainly there are exceptions, and some pointed out in this thread), and I'm pointing this out as an opportunity for self evaluation that maybe your concerns are misplaced.
If if were a concern of the general public, gun makers would put low profile hammers on all their guns, and holster makers would cover hammers with all their holsters. The fact that there are very few low profile hammers on factory guns, and practically no concealment holsters that cover the hammer, should indicate the issue is not much of a concern.
I'm not telling you what holster to use or what hammer to prefer, choose whatever you like and rock on. I'm simply pointing out your concern is not a common one, and probably for a reason.