So I decided to take another look in light of the patch and see what it was that bothered me so much about the possibility of a dual rep Ishkur...
Oh right. I remember now.
The Ishkur has less powergrid than the Incursus (52.5 to 56.25) which means at the very least I'm downgrading to Light Ion blasters from Light Neutron blasters. That's not a huge deal as the extra drones make up the raw DPS lost (Ishkur 249 DPS to Incursus 197 DPS), and the extra CPU (193.8 to 168.8) means I don't need to use meta damage control and warp scrambler for better resistances and range respectively. The tank with the improved resistances means the Ishkur is better at taking damage than the Incursus (238 points/sec to 223), and the Ishkur has superior targeting range (59.4 km to 37.5km),, sensor strength (14.4 to 10.8 ), and a slightly smaller signature radius (39m to 42m).
So far, so good: in almost every aspect the Ishkur comes out on top even with a lower power grid.
Then I look at mobility. Incursus has base afterburner speed of 1082 m/s with 4.5 sec align time. Inshkur move max 853 m/s and 6.2 sec align time.
I'm an addict to speed. I fly with low grade snakes and even my afterburner frigates move with a bit of pep. The thought of giving up a 150 m/s and almost 2 seconds of align time makes me cringe. Overreaction? Perhaps, but its enough downside combined with the prices (fully fit Ishkur is about 4 times the cost of a fully fit Incursus) and the rate I throw my Incursus into any fight with willingness to lose it, I'm not sure I'm ready to risk Ishkurs at the same rate.
Still, I might give it a try and see after my next paycheque.