white has to think twice about playing f3 in the owen's and thats not seen in any of the critical lines.
If I recall correctly from Soltis (1977) Defense P-QN3 , Ken Regan answered with 3 f3 with 3... d5 !?. I could only find one game where 3 f3 was played against me. It's only blitz, apologies if it has no theoretical value.
I don’t often play them but I kinda like Owen’s defence (I haven’t played the modern before 🤪)