You can always buy the Switch later when its more available and cheaper, and it will also have more games and their online service is fully explained. That is of course if your in a situation where you can afford multiple consoles down the road. Since you have multiple consoles now, that shouldn't be a problem I'm guessing.
Waiting a while to see how Switch unfolds is just a smart idea all around. Pro looks to be moving along nicely and you can count on huge support for it over the next year and going forward with Scorpio on its way.
Present timeline console wars as explained by The Matrix
XB Fans - The PS4 Pro is a system, Neo. That system is our enemy. But when you're inside, you look around, what do you see? Fanboys, gamers, casuals. The very minds of the people we are trying to sway. But until we do, these people are still a part of that system and that makes them our enemy. You have to understand, most of these people are not ready to be diskinected, and many of them are so inured, so hopelessly dependent on the exclusives, that they will flame to protect it.
PS Fans - How did I beat you? - You... you're too fast. - Do you believe that my being stronger or faster has anything to do with my sales in this space? Do you think that's native 4k you're seeing now?
NiN Fans - Whoa. Déjà vu. - What did you just say? - Nothing. Just had a little déjà vu. - What did you see? What happened? - A console gen went past us, and then another that looked just like it. - How much like it? Was it the same gen? - It might have been. I'm not sure. - Switch! Reggie! - What is it? - A déjà vu is usually a change to the form factor. It happens when they innovate something.
PC Fans - Throughout human history, we have been dependent on consoles for gaming to survive. Destiny, it seems, is not without a sense of irony. / Don't think you are. Know you are!// //