Skids versus wheels, I have seen both. I think wheels are more reasonable if you can use them. The grav lifter the port has is going to be busy when you need it, or you may be at a port that has none, or they do and it broke down just yeasterday and they are awaiting parts. It seems to me that wheels would work out better, even if you do have grav tech. With power shut down, you can still move the craft, and do not have to depend on someone else for a high tech piece of gear. (You could carry your own grav lifter I guess, just in case.)
Skids and feet on many designs look cooler. And on heavier designs may be unavoidable. I still see this as second best.
I think the comment about struts was more in regard to where those struts are mounted. Remember the gear, whatever you use, has to support the entire ship.
Water landings are not a bad idea, but the ship would have to be designed for it. I am assuming here we are talking calm water landings. Heck, rig an external tanks with blower or HP air, and a vent valve at the top, and you got a submarine. So when the water starts getting rough, you go under the storm.
Below about 100 feet, its as calm as glass.