Using WASAPI drivers in SPLAT when using an Eleven Rack...

Anyone here know anything about using the WASAPI drivers in Sonar Platinum when using Avid's Eleven Rack hardware?  Looks like it's not only possible but preferable.  What are the ups and downs of the WASAPI drivers??
 

I used WASAPI in the past when I was having trouble with ASIO. Never had a problem with it. It ran flawlessly.

not to poo-poo the woo-hoo, but it would be nice to know which onboard chipsets they compared against which thunderbolt interfaces, as there have certainly been mixed reports on these forums regarding wasapi

 That's a pretty sad look'in screen shot Johnny
I just tried WASAPI exclusive drivers using an Allen & Heath ZED 14 as a USB interface recording acoustic guitar and vocals with drum loop running in Addictive Drums 2 with OK results as long as input monitoring was turned off, but doesn't support anything but 16 bit/ 44.1 k/Hz, and that's not the ZED's fault.
 
 Of course it's possible to make great sounding recording with a ZED @ 16/44.1, it has very, very nice preamps, and channel strips, with a Focusrite Liquid Channel, Lexicon, Digitech multi FX processors, TC Helicon vocal processor, and DBX compressors in the rack. Tis a boatload of outboard gear and processing that keeps recording latency done to a dull roar, and being the ZED can only output 4 discrete analog outputs at a time it's not as important it is to record at 24/48.
 But I'm spoiled with ASIO and my Focusrite Scarlett 18i20's ability to record 8 audio tracks by itself, 16 with the Octapre through ADAT, all running input monitoring with Eventide Ultra Channel on some, Waves Sheps Omni Channel with HReverb inserted into it on others, and work with 24 or so existing prerecorded tracks at a measly 2.7 msec effective recording latency, 6 msec round trip.
  The Scarlett is not exactly as fast as Thunderbolt, but close enough where it's humanly impossible to tell the difference.
  WASAPI drivers also don't support any of my 24/48 projects, which is like 80% of them, about 15% recorded at 24/96, and only 5% recorded at 16/44.1. 
 Deal breaker for me, but that certainly shouldn't be a problem for using WASAPI drivers to record an Eleven Rack which is a boatload of outboard processing for guitar!