Had a chance to fondle it again last night, and again was struck by how light this platform is! Also, the barrel is changed by removing a single hex-screw, and then pulling the barrel UP and then forward. The receiver stays in the stock.
This by itself is not a problem, but with certain scope-bell sizes and rings (in this case, an Elite 3200 3-9x on med rings) the scope has to be dismounted to change the barrel. At the very least, some high magnification, AO or large bell scopes will need high, extra-high or maybe even QR rings for frequent barrel/calibre swaps.
Burris's quad scope is quite short, so it might not have this challenge.
Still a neat little rifle.