I have been using Autoglym Super Resin for many years.
Until recently and the finding of Carlack 68 ( which im told is very alike to AIO) AG super resin was a go to product.
Mirroring Accumulator's post it has a minor amout off cut to it, and is less off a chemical cleaner than AIO. It does a better job off hiding minor marks which the Carlack/AIO will magnify/show up. On swirl free paint I would go for the AIO, on oxidised and swirled paint I find I use both. You can here the Super Resin Cut as you use it.
I like Super Resin that much that I buy it in 5 litres at a time!
As for dusting I have found as my technique has improved working the product and applying it very thinly dusting is not an issue even on black.
I used to apply it to thick with stockinette cotton cloth and remove with the same, dust heaven. Applied thinnly with a Foam hand pad and removed with a good MF, works a treat, no more dust than with Carlack 68.
As for the EGP, I started a thread some time ago, stating I had not noticed any extra gloss in using it, some people agreed, others siad with mutiple coats it did. That aside its a great product, again another of my 5 litr sized purchases. I have stuck with this rather than Klasse SG as I feel it may be easier to use. ( not SG experience to back this up). The product suprises people as it is very watery. I use in a spray bottle and spray onto a foam hand pad, spreads easily and thinly without using to much product. Again one of those product the thinner the better. Leave between 30 - 60 mins and as long as the atmosphere is not damp wipes off.
My tip if you can, is longer you leave it on the better. May a time I have applied it to the whole car night before and then removed the next day if the car is garaged over night.
AG SRP, AG EGP topped with P21s is one of my Fave combos on my dads silver car and was so on my old light blue car. Its looked good on every car I have tired it on, red, blacks, mettalic blue, greens. I think it would work well over AIO imo.
On sunday I did Carlack 68 x2 and EGP x 1 on a silver car, looked stunning.