i liked this piece by david muir on the share blog - food for thought. and maybe alt worship has tripped up over this worship style question. in grace we recognised this problem about 5 years ago and developed a different way of thinking about who we were shaped by an ethos which includes mission (for us captured in the word engage) at the heart of who we are. we've a long way to go but this reminded me of the challenge. here's a quote
The problem with worship-shaped churches engaging in mission is that they find it very hard work. It is like introverts going to parties, or extroverts going on silent retreats – it's just not their 'shape' or their inner style. They can do it, but it drains them because their membership is not 'gathered' around this purpose.