Good evening, M,
I have been using an i-tec Dualdoc myself for 3 years. Based on my experience, I have bought two more for my colleagues.
With the first notebook connected (Lenovo X1-G3) there were sometimes delays when switching from the notebook screen to "the big one". Since December 22, I have had a Thinkpad P15v Gen 3, which runs perfectly.
Neither I nor my co-workers have missed a driver: simply Plug & Play! ;-)