I think there is definitely something to them

As a community we see DSO purists gravitate to particular wide fields, and planetary purists gravitate to particular simpler designs. So people are seeing differences.
I think you have to ask yourself how much of this type of observing you do and if it is the kind of observing that gives you the most enjoyment. If it is, then definitely worth experimenting and training your eye to see the differences these specialized EPs can readily deliver. But be warned, they are not as comfortable as what you might be used to from the T6 line. I myself like comfort as much as the next person, but I also like optimum performance as well. I solved the problem by having both, comfortable things like Radians, then the specialized planetaries for when all that matters is maximum detail.
I'd say go inexpensive and get some UO HDs or BGOs, then experiment and compare for several months and train yourself by observing the differences. Once you know what they are, they stick out obviously when observing, especially when using larger aperture scopes. After that if you like what you see, you can then go to the more expensive varieties that you mentioned and IME these do even better.
Anyway, good luck which ever way you go. In no case does any quality eyepiece give less then excellent results on planets. So they all cross the finish line screaming and doing a great job...just depends if you want to cross the line first or not