you can flash 'em back and forth.
twrp is better if you are working in a repair service/corporate-business mode where you have to flash a lot of devices
due to it's layout, easy handling, and speediness. however it can be twitchy.
philz is cwm recovery with a facelift and some addition options and is rock solid.
users on the other hand can be VERY unreliable.
My aged brain seems to remember this from much earlier and I'm having a deja vu. I'm so used to TWRP and I have come to prefer it so I think I will hang with it. Do you know why @Restl3ss preferes and recommends PhilZ? Is it just preference too? He can't be wasting his time trying each build with every different possible recovery, so he picks the recovery he is more comfortable with? You aren't aware of any special reason unique to this ROM why TRWP wouldn't be adequate, do you?