The UW version has a very strong midrange game thanks to SFM and can pivot into practically full powered (arguably even better than regular) UW control post board in matchups where delver is bad (mainly Bolt/Push based midrange / control)
It does however lack reach and is thus slower and weaker in tearms of it's tempo plan. Also path to exile, es great of a card as it is in long games, is not a particularily well positioned removal spell right now as there are many must kill creatures that come down in turns 1-3.
With that in mind and considering the way Spike's manabases look anyway to support Archmage's Charm and Mystic Sanctuary (8-9 fetch, 4 Shocks, 2 Sanctuary and rest islands), I came to the conclusion that it should be relativly free to move from either of those 2 colour lists into Jeskai.
Here is the list i have been testing:
That approach is quite different to the other lists here as it's much more closer to mono blue delver splashing W and R but I strongly believe that the success of delver is tied to maximizing Archmage's Charm and Force of Negation.