If you're going to have a standing desk at home I recommend building one that's fixed height. A fixed height desk will be much more stable and allows you to have storage underneath. If you want to sit use a drafting chair or stool.
There are a number of designs that require minimal skill and tools. The first one I built used parts from Ikea and only required a drill and some hand tools. It looked great, had a ton of storage, and cost under $400.
I've managed to divide my desk up into half-sit/half-stand, and I've made it easy to move my work from one to the other. If I had to "adjust" my workstation every time I wanted to stand up, I don't think I'd often do it. I don't want to devote anything more than muscle memory to a task like that while I'm working.
I got the IKEA Bekant sit/stand L desk and I’ve been really satisfied with it. I alternate between computer chair and standing and don’t think a stool would provide enough comfort for me.
I had a carpenter build a desk for me at my preferred height, and use a stool when I don't want to stand.
The stool not providing enough comfort is a plus for me, as it naturally makes me to switch between standing and sitting throughout the day.
Additionally, the stool doesn't provide any back support, which has been great for me to force a better posture and get rid of back pain. (I probably still end up sitting 70% to 80% of my day, but that's good enough for me :)
There are a number of designs that require minimal skill and tools. The first one I built used parts from Ikea and only required a drill and some hand tools. It looked great, had a ton of storage, and cost under $400.