It probably depends on what your goal is?
I use KB's/bodyweight, with running, but my goal is to be able to keep up good bi-pedal movement. Almost all of my "running" is at MAF pace, but I do throw in strides about once a week. I am 54 , and my "running" includes a lot of walking. I run about 6-8 hours per week.
This summer, my strength work is a basic push/pull hinge squat. On Monday I usually do pull-ups/push-ups , box step-ups, reverse lunges and a few heavy , powerful swings. From 40-100 , depending on how much time I have. On Thursday I do the same work out, minus the swings. If I had the option available, I would probably dead lift, instead of swings. I also try to throw in some TGU's, either for warp-ups or as a finishing exercise , at some point through the week.
I am running 50 miles this weekend, and depending on how that goes, I may sign up for a 24 hour race in November. After that I will be more strength oriented in my pursuits. Probably going back to S&S for awhile, and then maybe taking up Q&D. I do this every fall and winter, because of weather and hunting season.
So, like I said it depends on what your goal is. Running one day, and S&S the next, is not bad for GPP. Seven days a week, every week. You will not make huge strength, or endurance gains, but ya wont get out of shape, either.