[Samba] fileserver permissions: 0750 vs 0740

[Pol Hallen]

Hi folks, maybe a "light" question, but I'm thinking if it's better set 
share users permissions as 0750 or 0740?

for security purpose, it's the same thing or it's better set to 0740? 
why, with 0740 I can execute directly from share but before I need copy 
to local folder, naturally with 0750 users can execute directly from 
shared folder

thanks for help

Pol