That’s correct. A normal RJ45 crisper will crimp a pass through connector. You have to take a razor knife afterwards to trim the ends. Cat 5 and cat 6 can all be crimped on the same tool. I don’t prefer pass through, but for someone who doesn’t do hundreds or thousands, it’s likely the easiest end to put on. I have read reviews where pass through
tools have trouble
crimping non pass through RJ45s. This is due to connector design and the razor that’s built into the crimper.
One thing I haven’t seen mentioned(maybe I overlooked it) is the rating of the cable. You need riser or plenum rated cable most likely depending on your situation if you are running in an attic. This has to do with the toxic fumes the pvc jacket will give off if you have a fire.
I personally would not want to pull
cat5 for some things and cat6 for others. While it may save you some money, it seems like a chore to keep straight and 1 box of cat 6 will go along way.
I do a lot of data work for my job(Industrial Electrician). Anymore we pull Cat6A to everything. A house really doesn’t need Cat6A but if you want the latest and greatest that’s the route to take. The difference between cat6 and Cat6A is a plastic spline that runs the length of the cable and separates each pair from each other. You also get a plastic piece that goes in the connector to keep each pair separate as much as possible in the connector.