If we're talking about TruTrak (or Trio) A/P's with ARINC then the well proven EFISes that provide this functionality (of ARINC output driving the appropriate A/P) are GRT, AFS, Garmin, & Chelton. All of the aformentioned companies have put a ton of R&D support into very tight interfaces with a good A/P. Blue Mountain kinda/sort went their own way, Dynon is going their own way, MGL is going their own way, and OP kinds/sorta has an interface...each with differing levels of success and proven functionality/reliability. AFS has it's own branded A/P that is tightly integrated, the new G3X has a fantastic A/P integration, and so do the GRT horizon's.
Even if you do feed these boxes with a 696, it won't matter much because the 696 isn't feeding GPSV. The EFISes themselves (again to differing levels of functionality) will generate their own signals to drive the A/P's regardless of input. At the moment the only good boxes with solid GPSV to drive said EFISes are the 430/530's, 480's, the Chelton/Freeflight GPS, and a select few other boxes that are not particularly popular amongst GA users. In contrast, if you purchase a Garmin GDU instead of the 696, the GDU has the capability to be expanded into a full blown EFIS with ARINC ports, etc..
My 2 cents as usual.
Cheers,
Stein