Yeah, I powered the Aeolus with a solid state amp for almost a year and when I finally found a tube amp (not OTL) that I could use without much fuss, the whole thing clicked for me on another level.
I would say that in my experience the Aeolus also sounds great out of solid state amps.
I preferred it out of my OTL WA3 (with best tubes) over the RME ADI-2 internal amp, but now that I have the TT2 I really don't mind leaving the OTL tube amp off and enjoying the Aeolus straight out of the TT2.
So personally I wouldn't say that without an OTL amp you are missing out on the potential of the Aeolus. It depends on the solid state amp.