I’m in a phase where run on sentences don’t have to be that bad … They can speed up the prose or give a more clipped feeling to the action, and they aren’t as intrusive if they’re consistently used, in otherwise clear writing. But, as I say, it’s probably just a (bad) phase.
I just realised that in my mind “run-on” sentences equated to “comma splice”, which is only a special case. Whoops! So, what I said — about the clipped feeling and speeding up action — was meant for the comma splice … But I agree, long sentences can be very satisfying in general, as long as they “work” in which ever context they’re used.
With the sleeves of their shirts hanging out of their suitcases. 🙂