Eric, I spoke on the phone with Donald yesterday and basically re-iterated what you said. Told him that if it's just for movies then no worries but if it's for multi-channel music then it may be annoying.
Nick, Yes they do look a bit similar in front baffle styling, eh?
The Dahlquist website...
The Axiom Quadpoles do generate a cool enveloping effect with minimum of detail loss but Paradigm and Axiom do sound a fair bit different if you are worried about timbre matching.
If you stay with the Paradigms, consider Dahlquist QX20R as the effects channel speakers. A great match sonically...