Can you use Saving Shield (Combat) and Mounted Combat?

[harmor]

Saving Shield (Combat):

You deflect attacks that could mean your ally’s death.

Prerequisite: Shield Proficiency.

Benefits: Whenever an adjacent ally is the target of an attack, you can, as an immediate action, grant that adjacent ally a +2 shield bonus to AC. You must be wielding a light shield, heavy shield, or tower shield to use this feat.

Mounted Combat (Combat):

You are adept at guiding your mount through combat.

Prerequisite: Ride 1 rank.

Benefit: Once per round when your mount is hit in combat, you may attempt a Ride check (as an immediate action) to negate the hit. The hit is negated if your Ride check result is greater than the opponent's attack roll.

I'm assuming not.

[Thazar]

You only get one Immediate Action a round. And they both take that slot so you have to pick one or the other.

(Also if you use it then when your turn comes up you also cannot use a swift action during your turn following the use of an Immediate Action.)