Claire, even though I'm pretty sure that I won't be going truly "minimal" any time soon, your desired approach to shopping really resonates with me.
It's funny, but back in the days when I lived in the big city as a young woman, I just naturally shopped like that.
I did two expeditions a year. One for my S/S wardrobe, and one for the F/W wardrobe. Between times, I thought about clothes plenty often. I read fashion magazines, enjoyed window shopping, and had fun wearing my own clothes. But I rarely felt the need to buy anything extra.
Now, that's not to say I never bought anything outside those expeditions....but truthfully, I didn't purchase outside of them all that often. Partly because I couldn't afford it, partly because I didn't have time to shop (and this was long before online shopping) and partly because I just didn't feel a need to very often.
Of course, it probably helped that if I did have a need, I could go out and look for what I wanted. So I never really needed to feel panicked.
But shopping wasn't really a hobby in itself for me. I loved clothes and longed for a fantastic wardrobe (which, admittedly, I never had then) -- but I didn't really love to shop for the sake of ...shopping.
Since YLF (and perhaps since online shopping) I've actually learned to enjoy the experience (much to my own surprise).
But I still prefer to do it in seasonal "binges." So the monthly "no shop" challenges are not true challenges for me -- unless I haven't bought my seasonal complement yet. In which case they are impossible, because I probably need to replace some essential!
Anyway -- this is becoming long winded, but I definitely like this approach for myself. By not shopping in between my main shopping phases, I seem to enjoy the actual wearing of what I have all the more. I do like to have a mid-winter refresher shop, but given the length of that season here, I feel as if it's either that or an Arizona holiday in February!!
Interesting -- I wonder if this preference is related to the way that we like to edit our wardrobes each season very carefully?