Oh no... the clipless question again

Well sort of. I'm relatively new to road cycling but have been mountain biking for years. The pedals on my roadie are just cheap things with toe straps so I thought I'd get something nice and shiny for Spring.
So I'm going round and round in circles as to get clips or clipless.
My thoughts are...
Clips - I'm talking traditional pedals (eg MKS Sylvan) with toes clips (no straps). The major advantage being I can ride with standard shoes.
Clipless - I'm talking Shimano A530 or similar... single sided so I can still ride with standard shoes if I want to (e.g. popping to the shops) butI can clip in if I'm off on a decent ride. And a nice pair of mountainbikey type shoes so I can walk around a little easier than full on roadie shoes.
My riding varies from shopping to day rides so I need something that will suit various uses and on paper I guess the single sided Clipless fulfill my needs. Yes I probably am a little hesitant of clipping in although I understand flicking your foot to the side can be more instinctive than pulling it backwards anyway.
And I HAVE used clipless before, it was, gosh, 15 years ago! I had some on my mountain bike for a while but went back to flats... but that's mountain biking, a whole different kettle of falling off.
Does this post sound like I'm convincing myself?
Well I thought I'd gauge some opinion as I jump from one side to the other every 5 minutes.
To toeclip or SPD, that is the question.
Cheers.