I wouldn't use a cowboy helmet, but of shrey is basically 2013 masuri's then your not really losing out. I have. O idea what they are like, but just because someone decides to change the goal posts doesn't mean all that went before is now unsafe,
And I think this is the crux of the matter.
Currently I can bat in a helmet, cap or nothing. That is not going to change with the new lids coming in.
All that will change is I will be able to wear a super-helmet, helmet, cap or nothing.
The old stock will be bought up by current players who like the old style.
The new ones will be used eventually if retirement doesn't come first.
Masuri will continue to evolve their helmet to look better when they see sales fall.
Shrey will probably continue and if they have anything about then, they will try to keep it as similar as possible.
Regarding injuries, I have seen maybe 10-12 bad helmet related injuries. Either going through the grill or turning head,so normally due to player that the helmet itself. At least the new lids will stop some of these from happening.
What I mean by bad is bleeding and having to leave the field.