I appreciate the fact Dave encourages slow playing. One of my problems is being able to sync with a more experienced player. Many players will play a tune alittle differently than how it's tabbed out. For instance, at my level of playing, i utilize a simple bass/strum in the chord progression. It's enough for me to just keep a good rhythm going. Some players will alternate bass notes, or arppegiate notes in the progression, which sounds flowery and cool, but totally throws off my concentration.
I haven't built my playing ability up to a level to be able to improvise like that yet, by playing fills and riffs. If i spent more time playing the scales, i could be more creative. But for now, i like keeping it simple.