Thanks for the reply. I saw that article previously. As well as few other helpful articles linked from it. Unfortunately, they all stop short of answering my particular question.
One of the articles linked from there references Apple USB Type-C to Thunderbolt 2 adapter (referenced here), and says it does not support monitors with DisplayPort inputs at all (only Thunderbolt monitors). And it has a bit unclear wording that might suggest only single Thunderbolt monitor might be supported when using that particular adapter. Anyhow, that adapter wouldn't work for me anyhow, as it doesn't support mini-DisplayPort at all.
I have an 3rd party USB Type-C to DisplayPort adapter (this one) and it worked to connect MacBook Pro to a single 4K monitor with DisplayPort input.
Most likely using two of those adapters to connect each monitor directly would work, with some cable mess on the desk. But I've been dealing with hardware for long enough to know not to make such assumptions blindly.
What I'd really like to know is, if using single USB Type-C to DisplayPort adapter would work too, in daisy chain configuration. Would any 4K capable adapter work, or is there fine print I should look for in the specs (i.e. this feature or that).
Since I currently don't have all the hardware to test what combinations might work, I was wondering if anybody actually has one of the above two configurations working smoothly. Either connecting each monitor directly using two adapters, or (ideally) using single adapter and daisy chaining monitors.
This may influence if I'll go with single 32" 4K monitor (these are about halfway between regular and what Apple calls "retina" displays), two 24" 4K monitors (these have about enough DPI to be in the "retina" display class), or just skip high res monitors until there's such thing as half-decent 27" or 32" 5K monitor that doesn't require multiple DisplayPort cables to connect to (current LG 27" 5K model sold by Apple is the only 5K monitor I could find out there that doesn't require dual-cabling, but it and smaller LG 4K monitor has dreadful reviews, I'm not willing to risk buying that one; and there's no other 5K monitors announced for release anytime soon either).