Frog,
I cannot answer the flying hour question. However, the Guard and Reserve pilots are not full time soldiers. A very small number are and are called Technicans when working as a Civil Service employee at the Guard Flight Activity. The Technicians would be called Cadre in some places but serve a dual role when in the Guard.
The Guard is the State Militia and are subject to both State and Federal duty if called by the Governor or President for active service.
The Reserve has no State obligation.
These folks are our neighbors...the banker, plumber, lawyer, truck driver....teacher...accountants....who are not "full time" members of the military. When they finish their deployment to Iraq and other places...they revert to their regular professions.
Not all the pilots are from "active duty" and many have done only Guard service with all flight training and conversion courses being done at Active Duty Army Schools.
Guard Pilots must meet the exact same standards their active duty brethern do....they attend extra training sessions beyond the one weekend a month and two weeks active duty training each year.
The notion only Active Service people can accomplish the mission does not hold water. Add to that, our Reserve and National Guard troops are an integral part of many "Active" units....and do so as "units" and not individual "replacements or fillers".