As far as I'm aware, modern ejection seats all use a handle either between the legs (or at the side of the leg). The older seats had a face shield but the act of reaching up for the handle could be impossible under very high G loads and the act of pulling down the handle tended to curve the back greatly increasing the risk of spinal injury. Pulling a handle between the legs tends to straighten and force the back against the seat which combined with a Conscious effort to push the head and shoulders back against the seat helps minimise the risks.

Many sources recommend a 'splash guard' for life jackets. In the water the effect of wind above water and the majority of the body below water is for a survivor to 'weather cock' to face into wind because the body/legs act as an anchor. A Conscious survivor can turn themselves around but once useful Consciousness is lost the survivor will be left facing into wind, any spray above the surface is then blown into their face and the chamber design and wave size can mean that waves/splashes are directed to, or well-up, at the face. Very little water inhalation is required to cause death. All Royal Navy (and German Navy) life jackets have spashguards fitted as do a number of the better commercial jackets in Europe. Some manufacturers sell splash guards seperately.

'Essentials of Sea Survival' by Golden and Tipton gives a great deal of information on the subject and is very, very good.