Update, after test riding the Panigale S Tyre seems ok, it looks like the 90 degree valve add on was at fault, so took it off. Cheers guys!
I plug my own tyres: never a problem. I've done trackdays on the push-in plugs, toured around Europe on them, and I've even plugged tyres using ear plugs, twice in fact - I needed to get home. One of my by-the-roadside-earplug-bodge repairs lasted 2000+ miles to the end of the tyre. I've ridden with a flat front tyre when I needed to get somewhere: centrifuge keeps them up - but doesn't work with rear tyres. I honestly don't know why people are so scared of plugs and repairs; maybe I've been exceptionally lucky, but neat holes plug fine and I don't know what the fuss is about. Anyone who's worried should try and cut a bike tyre up - they're bloody strong things.
My last punture damaged the metal inside the tyre, and I made it the 800 miles home ok on my own, but with my wife on the back, I could not sleep at night if the worst happened. But I like the ear plugs idea I had plenty of those with me and with the tyre weld it may have worked.
I had a rear tyre plugged once and it was fine, however it was always in the back of my mind that it was there and my confidence levels dropped dramatically! It's only a couple of quid to fix though so I would say try it and see how you get on.
Not for me, I am sure a pro plug would be fine, but it would be at the back of my mind chipping away at my confidence.