Remz are the farthest feeling skate from a ski boot. so if you are looking for the same feeling of a ski boot, avoid remz all together.
Remz are arguably the most flexy/playful (IMO: floppy) skates on the market. You can buckle that shit down and still practically break your ankles flexing forward. V-cutting just makes them more flexy. Some people like that, I like my skates to feel tight like a ski boot so i can feel them better, but still flex enough that i can get low and feel comfortable. I skate a Razor SL skate, but have also skated just about everything thats on the market excluding Nihm (heavy razor cult skates that had dirty sex with a valo skate).
I think v cutting a cuff is fine if you find yourself needing that little extra bit of flex. keep in mind the smallest v cut makes a huge difference, so if you go for it cut a small v and try them out, then go from there.
V cut liners are stupid IMO. they are just taking away a part of the skate that helps stabilize your leg/foot. the comfort is also compromised in v cut liners. If you have a vcut cuff and a regular liner you will feel the same flex as a v cut cuff/liner just more comfort.
Sparknotes: Remz=flexy as fuck. Vcuts are cool if you need some more flex, start small with vcuts cause theres no going back. vcut liners are stupid.