This thread is funny. I camped and backpacked for years and never knew there were dedicated hammers for pegs. I always thought people used whatever hammering tool they had in their tool box.
I have used a hammer from my car tool kit, hatchet/ axe or a rock. I have never brought a separate hammer just for tent or awning pegs. Always install on an angle pointy end down towards the tent or awning (guidelines) and in 35+ years never had a failure even in high winds, nor a problem pulling them out of the dirt/rock. I have had a few they were bent in great shapes from hitting rocks.
Now I feel like I am missing out.
For BritKLR I can see the need for something more robust for the 10x10 awning stake wise, still lost on the hammer though.