There's a section of steep trail at the start of my commute to bring the little guys to school that I kept skidding out on and having to walk the bike and trailer 20 feet on; I used that as justification to change to a more aggressive set of tires. I had a Duro touring front, Schwalbe Marathon rear tire that both worked fine, but the ride felt a little sluggish on top of my traction issues (was lugging an Xterra convertible trailer with two 35 pound little humans besides myself, leaving the trailer locked at school and continuing on to work from there). I got a pair of Schwalbe CX Pros (https://www.biketiresdirect.com/product/schwalbe-cx-pro-700c-tire-hs-269?fltr=3755). MAN. So the tire's only 2mm narrower than the width of the tourers, but with aggressive tread pattern, and so with the reduced rolling resistance I've been about 10 minutes quicker on my commute, and able to stay in the larger chainrings longer. It's amazing what such a small change can do for your ride.