"Can the drum pads be set to their own Midi channel for samplers like the electribe and the volca sample?"
No with the seq1 and 2, with an electribe, for exemple, you will be able to sequence 2 voice (2 different channel) with different notes.
The drum seq will only send on 1 channel simultaneously but has 16 track with one note par track. On the electribe it will sequence 1 voice only, perhaps it could be used to polyphony. One track of drum seq for C, another for C#... to write more than one note to the same step.
"for powering a midi thru splitter"
my set up with my elektron:
elektron (master clock) midi out => bsp (slave)
bsp midi out => elektron midi in
elektron midi thru => a midi splitter
First week I had the bsp, I use my setup without a computer
, then I had a problem of midi notes held on. I change my setup, and use a computer again
, and only use my bsp for cv. In your place I will wait to see if Arturia is able to resolve some bug with the next firmware update. Or I can sell you my bsp, and I will buy another elektron with a midi sequencer