Yes the Kivic solution looks cleaner but how much does it cost? The hack of the AE is very easy and does not alter the unit in any way, except breaking a few tabs on the bottom panel. Fully reversible. I paid $70 for it on Amazon IICRC.
Mobridge DA2 > JBL MS-8 > JL Audio HD600/4 > (3) Hybrid Audio L3SE & (2) Rainbow Cal25; JL Audio HD900/5 > (2) Morel HCW-10 & (1) AE SBP15