Well, the picture is of the OG Hellcat and not the Hellcat Pro which can hold 15 and which would then add some to the grip length. Not much, but I don't think it would change your mind.
I have 4 Shields (9mm 1.0 Apex trigger; Performance Center 1.0 9mm; 40; and 45). I also have the Performance Center Sheild + 4" barrel, and just ordered the PC Sheild + Ported with Crimson Trace optic. My current carry is the Hellcat because I love the sights on it. But I'm now leaning more towards a bit longer barrel/slide for better sight radius, so the non Sheild + might end up replacing the HC for EDC and when I get good with the CT optic, start carring the PC Sheild + w/CT optic.
I always like the Shields, they were my EDC before the HC which I switched to due to capacity. It was a toss up between the P365 and HC whose sights I like better. The P365 XL and Hellcat Pro are contenders, but I like the 4" Sheild + due to longer barrel/slide.