Around town near home, two sided SPD pedals. But on tour I want the option to use normal shoes off the bike and SPD shoes on the bike. For that I switch to M324 pedals for touring.
Some people can ride for 60 miles and wear the same shoes for the rest of the day around the campsite. I can't, when I get off the bike I have to put different shoes on with softer soles. Thus, I am carrying two pair of shoes, one to wear on bike and one off the bike. This also gives me the option to wear the off-of-bike shoes for evening grocery store runs, restaurant trips, or on my last tour one day when my biking shoes were still soaked from the previous day.
But, if you were to do the entire trip with one pair of shoes, there is no need for multi-function pedals. On my last tour, one guy used SDP sandals for everything, thus a double sided SPD pedal was best for him. One other guy used sneakers for everything, he used an old platform pedal using toe clips.
Type of shoes? I have four pair, three Pearl Izumi and one pair I do not recall the brand. I prefer the ones with velcro straps instead of laces. Do not focus on which brand or model, instead focus on venting, walkability and most important, fit. I also use Superfeet insoles in some of my shoes.