Absolutely. With the availability of various clamp types (thin, short, long, narrow, whole milled, spring steel etc.) for these systems and being able to use multiple clamps when needed, it gives much more versatility than a Wicked Edge system can ever give you.
As an example, if you buy a Hapstone R2 and get yourself the Wholemilled fillet clamps, or Small Lite clamps, you can sharpen smaller blades easily. If you want to sharpen a long fillet knive, then simply use 2 Wholemilled fillet clamps to stabilize and support the blade.