How quickly do you need to get a setup going? The way I like to approach these kinds of things (printers, computers, etc) is to get a good platform that will support what you want to do in the future even if it can't do it now. If you're thinking about a DAKSH setup on a voron, I would build the voron now with the DAKSH in mind and build that add-on when it's more available.

What I would be trying to avoid is getting something like the ERCF and then getting buyer's (builder's?) remorse if significant progress on the DAKSH is made shortly after. Yes, the ERCF let's you print multi-filament NOW, and you could theoretically use it with a voron and then upgrade it to a DAKSH system later, but if you invest in that approach, you likely won't want to rebuild your setup for a multi-tool setup.

All of this is assuming that you care about the other benefits of multi-tool, which of course you may or may not. If all that's important is multiple filaments with relatively similar properties, just get whatever is in your price range and you feel comfortable toying with. If multi-tool interests you at all and you don't need something right away, I'd build something with that in mind and feel out the progress before making a final decision.