Sigma 10-20 makes a 360 degree panorama a matter of only 6 vertically framed shots, theres just alot of distortion which makes PS a lot of work. hope you enjoy!
You did an absolutely amazing job here. The composition, the colours, the perspective and my personal favourite, the clouds, are all perfect. Very well done!
I can tell you used a polarizer! (I think? Dark/light bands in the sky from where the light is more directional from the sun angle...). Very very cool pano. Great colors and exposure and looks like a beautiful view too!