Yes, lga1150 and 1151 coolers are interchangeable.
But, with the 14nm construction, Skylake runs remarkably cool.
When I started testing my 6600K, I used a small noctua NH-l12 cooler I had lying around.
It was perfectly adequate for a 4.7 overclock.
I had planned to use my old Noctua NH-D14 which is quite large.
Instead, I just used the smaller cooler and have had no issue with heat at all.
My bottom line....
Agressive cooling is not needed for Skylake.