just like Alton Brown in the great food show "Good Eats"
Good Eats | Food Network
I hate single "taskers" and greatly prefer "multitasker" items
so years ago I got a multi pocketed "adventure" vest and an "8 in 1" field jacket from Cabelas
so when the time is right, I can carry equipment in the vest or I can carry it in the field jacket - the "game bag" section is ideal for large lenses such as the 150 - 450 zoom or the sweater
I unload the back pack or the car, load up, doesn't take much to make the vest extremely heavy !!!! or the jacket or the sweater whatever is the best choice and off I go
what to use, it all depends but options are various.
and of course, I don't have to use any of it if I don't want to.
options are good
isn't that why we have DSLRs or SLRs and multiple lenses
Options