I am a big advocate for doing everything retoucher needs to do with a few tools as possible. Masking is one of this things that can be perfectly done on Photoshop. There is a range of tools and ways to approach masking from very basic raw selections to precisely calculated and adjusted masks. So you don’t need anything else except Photoshop for the masking in vast majority of cases.
Unfortunately, Topaz Remask masking technology is very good, super precise and easier to use with complex selections than Photoshop. It’s hard to resist not to use this software.