It's overkill for shorter rides though. Can anyone recommend a bag (small waist or large saddle, I suppose), that can take a phone, basic tools, spare tube and a couple of bars?
Waist bag: Lowe Alpine Mini Belt Pack - http://tinyurl.com/6qbc4 . (I think I got mine from Cotswold Outdoor but their website is down at the mo).
And/or any decent small to medium size saddle wedge bag. The expanding ones are a good idea.