I'm just running a Suspension lift.

You'll have less rubbing issues to deal with, so you'll be trimming plastic, not sheetmetal. A boxcutter or exacto knife will make easy work of that.

I was the one who mentioned trimming the ARB - I was getting contact the the lower part of the wing on the tire. If you have the winch bumper relocated for the BL, you might not have that issue. You will not need to trim for the Shrockworks. I don't know about the Calmini. The ARB wing doesn't follow the natural curve of the wheelwell and lines up failry tightly to the wheelwell. The Shrockworks wing lines up more with the wheelwell and is set slightly forward to help reduce rubbing issues.
a Pic of the Shrockworks bumper...

Since this one is small...my ARB


Pic of ,my ARB before being cut
In that last pic the area in red is what I cut off. I actually cut more off than I needed just to make the ARB wing follow the wheelwell departure line better.

I would trim the ARB wing even if you don't have any rubbing issues just for the look.