Twitter client with selective updates?

[chreescawks]

I've been trying to find a Twitter client with a feature similar to Twitter's own text message "device updates" feature. I may follow a lot of people, but I don't want all of their updates coming to my phone during the course of the day, and I really don't want to resort to text messages instead of an app to do the job.

I've tried looking, but is there already a Twitter app that allows only certain people's updates to create a notification on your phone? If not, it's a feature that I'm sure a lot of people would greatly appreciate. I'm looking at you, Twidroid!