I have the pictured Crank Bros tool. I like it, it's well made and has a fair amount of stuff on it.
It's fine if your bike has QD wheels.
If you need to replace an inner tube on a bike without QD wheels it has no 15mm spanner, so you won't get the wheels off.
I was riding my BSO with baby seat on a family holiday in France in August.
My chain ended up falling & jamming between the freewheel and the spokes. A gripshi(f)t adjustment failure..
The quick-detachable link in the chain was, in full accordance with sod's law, the part which got stuck. I carried the bike a mile back to camp where I had a spanner set, and then had to take the wheel off to pull the chain out of its predicament. Thankfully my daughter was not in the child seat at the time. If I had been further away I would have probably used the Crank Bros tool to undo the chain & free it.
I also have a canyon multitool which I carry on family bike trips, which has a 15mm spanner.