I own a 2008 Monaco Diplomat SFT, bought in March 2008. I've put about 25,000 miles, mostly in short to mid-length trips. Every time we stop, I put out at least the full wall slide, even if it is just in a rest stop.
I've never had a moment's problem. Before I put the slide out, I extend my left arm putting my fingertips against the coach, starting at the front of the driver's side, and walk to the rear. If anything comes between my left shoulder and the coach, the slide cannot be put out.
It is true that the water and sewer connections are under the slide when it is out. In my walk, I set up the water connections and sewer, and electric - which is not really blocked.
When we are departing, I pull the slide in prior to emptying the tanks.
The full slide was the decision factor for me.
Bud