I just didn't want anyone who might want to try it to get scared away. The wood horns are kind of fun to make, actually, a break from just doing boxes.
Actually, if you get the midrange entries pretty much as close as you can to the tweeter throat (which is easiest with smaller mid drivers) , and do a quick HornResponse model (also not hard, get parameters from my spreadsheet and the drivers' Thiele/Smalls) to ballpark the port areas and back volumes , you're likely to get something that makes more than reasonable sound.
You won't likely get linear phase response (I still haven't gotten all the way there, though I've been close) but with a miniDSP for crossovers and eq, you can make something surprisingly workable that will act like a broadband point source with directivity.
And while this approach might not give maximum sensitivity nor high enough SPLs to knock wasps out of the air, for home use it should be more than almost anyone would need.