I think this may work using the new MIDI bus feature. Eack track now has 16 buses of 16 channels each.
Alas we don't have the possibility to route to buses straight from the MIDI editor yet, so you need a JS plugin that can route your MIDI stream across buses. Fortunately Jeffos wrote one very quickly, grab it from the attachment here: http://forum.cockos.com/showpost.php...1&postcount=41

Put it on the same track, in the very first insert slot. Set it up as follows:

Input Bus = All (can have this set to B1 as well)
Input Channel = 2
Output Bus = B2
Output channel = 1 (whatever channel you need, actually, to make the kick plugin work)
Routed source events = Filter (this setting will hide Channel 2 data from Bus 1)

Now assign your "Kick" plugin to MIDI bus 2. Do that in the plugin window header by right click on the I/O button (between Param and UI) and choose MIDI input -> MIDI Bus 2.

Now the "Kick" plugin should get only the data on MIDI channel 2, while the baseline gets all the rest of the MIDI channels.

