There is no right and wrong, use what you like. If it sounds good ..

Usually people use different effects for different purposes. I personally still prefer the "lush" Lexicon Reverbs for my Guitar.
Some people like R2 for a thick reverb, some like Phoenixverb which is more transparent.

There are many different sounding reverbs with different "color" / "densities" for many different sounds/purposes.
I would use what works best for a particular track / song.

Other aspects are workflow/handling:

I also would use RME effects for a vocalist to add some "volume" to the sound if the vocalist needs it to feel comfortably when singing. And this is easier than having to provide a routing from a DAWs reverb signal to the recording interface.

In the DAW its maybe easier to use Reverb either as send or as insert, depending on the use case / project structure.
If I only want to add reverb for my guitar track when doing an overdub, then I prefer using the effect as insert.
If I need the reverb for several tracks in different intensities, then I use a send.