I am considering adding a custom channel/guild chat notification + whisper option as well. I initially meant for the client to also handle bidding but I probably not going to implement that now. A whisper handler shouldn't be very hard to add but isn't there yet.
Our guild would definitely use this if it was implemented. Since we have everyone sit in a standby channel, and an officer doing a check every hour or so while they wait for the standby people to whisper them.