Mounted Casting
Version: 1.0
Author: http://skyrim.nexusmods.com/modules/members/index.php?id=972816
Category: Gameplay
Requirement: //
Description: So, you've downloaded the latest BETA patch for Skyrim and saw that it allows you to use mounted combat 
This is a huge improvement and we should thank Beth' for this, but... You're a mage. And mounted combat does not include mounted casting.
WAIT NO MORE!
This is now possible. Just equip a spell and press V (left hand) or B (right hand) to cast you spell(s).
NOTES
* Spells will always be casted in front of the player.
* This mod requires the latest SKSE and the 1.6.87 version of the game - http://skse.silverlock.org/beta/skse_1_05_07.7z
Install: put the script folder and the ESP file in your DATA folder, then check this mod in your favorite Mod Manager.
Video:
http://www.youtube.com/watch?v=DHFm_kilxRI
Download:
http://skyrim.nexusmods.com/downloads/file.php?id=17703

. Good to know this will be available once 1.6 goes official!