The Nord2CD https://www.nordkeyboards.com/products/nord-c2d with its 27 note pedal board https://www.nordkeyboards.com/products/nord-pedal-keys-27 is designed for being moved around for sessions and quite robust. The midi out implementation is detailed in the user manual see https://www.nordkeyboards.com/downloads/products/nord-c2d-organ.
I think the pianos and drawbar organ are are excellent and the small baroque sampled organ included is quite useful - but not as good as HW. The drawbars operate as the organ "stops" (and are listed as sending midi out).
It is quite expensive (around £3,300 in the UK) but designed to be portable. I suspect it would be quite easy to get going with HW.
I think there is a thread about using this with Hauptwerk. look at this one http://forum.hauptwerk.com/viewtopic.php?f=1&t=16960&hilit=nord.
Iain