Why do people call it the "TA's"? Isn't that what the character out of The League Of Gentleman was in and used to call it all of the time? The TA's?
Is there more than one TA? Do the TA have a sneaky offshoot department also called the TA that then makes them plural?
On a serious note and this is by no means slating the TA that provide much needed additional manpower to overstretched Regulars (except the cowardly war dodging instructor lecturer types), why even think about going TA if you want to soldier as a living? Go regular first, if it doesnt work out, try the TA.