Well if you look at it, the biggest complaint about RT is the lack of legacy Windows programs. which your Android tablet doesn't do anyway.
It's logical I'd say under the following conditions:
You don't mind missing Windows 10. (NOW, we can reasonably expect Windows 10 for these devices, there's speak of an ARM preview and whatnot, but people cast doubt on whether 10 will appear for these tablets. I'm willing to bet yes, but still, there are doubters, who aren't unreasonable.)
You don't need x86 compatibility. (You have an Android tablet, so you're probably good.)
The design is worth it. I almost traded my x86, much speedier Dell Venue 8 Pro for a Surface RT (similar value) because its design, build quality and kickstand brought a lot more value to me than the raw power and full Windows the Dell had.
My reservations are this:
Performance, the original Surface RT isn't the speediest. It's tolerable, but still, kinda slow.
No x86. (no viruses and stuff too)
buuut I would look at other tablets, like older Atom tablets or current ones first. They are more capable and powerful, albeit not as well designed. (just slates, I have yet to see a kickstand in one, or one to make me pause to admire it in the cheaper end of the market.)