That "D-Pole Filter Plug-in" is actually the VST version of my Waldorf Mini-Works 4-Pole standalone filter. (The 'D' being 4th letter in alphabet and think there's even some yet "James Bond" association to the name, like all else Waldorf).
So now that am thinking about it, Waldorf's AFB (Analog Filter Bank) rack of 16 hardware analog low pass filters with USB, intended on used "integrated" into DAW and VST software **could** be viewed as 'one of the first' to implement hardware integration as it makes sense now that when they went bankrupt, straight away went over to Access Music to help with development.
In any case, looking forward to which direction that Access is going to go next and would love to see a hybrid or all-out new Virus with analog oscillators, filters, et al, with a long ribbon controller and 69 knobs
Will be visiting my parents and brother around Thanksgiving/November, and Sweetwater is only another 1 1/2 hours North of them in my 'home State', so plan on taking a Pulse 2 for a test drive in their rather cool studios there at Sweetwater and will report back thereafter.
Waldorf Nave App is so freaking awesome, it makes me wonder if it will remain on iOS or if a WIN/MAC VST version be made?