regarding spring bars I was just reminded of one of the huge advantages of a NATO. I was splitting wood, had my Steinhart Ocean One on the wrist on its Bond nato and as the axe struck one round the jolt was enough to ping a spring bar out. First time I’ve ever had it happen. watch remains on the wrist held by the other bar, spotted the bar on the floor and popped it back in. Now there is, I know, a risk that natos, especially if too narrow, can hook on the collars and pop spring bars out, so some advocate using collar less bars with natos. if you do this be sure not to use those bars with another strap, the bars can not be removed once fitted, except by cutting in half (with electrical snips/pliers).
Also if you are wearing a watch on the bracelet, if its the sort where the spring bar not only holds the end link, but also acts as the pin to the next half link, then the movement of the half link will wear through the spring bar over time, so change the spring bar occasionally.