I run the ISX Trigger Mips.
At 660 grams for a medium/large the weight is a non issue.
My problem comes with packing it when riding long uphill sections in warm weather. I've really wanted to ditch any kind of pack , few snacks in pant pockets and water bottle is enough for a lot of my rides. I wear the backpack almost exclusively to strap the helmet to when I'm going up.
The bar mount looks ok I guess...