Chris, this one slipped me by, but i've downloaded it for a look. I've visited your site, and noticed Qmidicurves is jack based. (which is good)
I'm not going to use a2jmidid for this, but instead use OOM2 to route the midi keyboard out of OOM2, into Qmidicurves as a jack input, then back into OOM2 as a jack input device.
When i finally have time to do this, as we're close to releasing OOM2 as a stable release, i'll give it a try and let you know how it performs, on my Gentoo system.
Thanks for sharing,