Why are you going for such an expensive/complex system.You need to ask yourself why you need it?
Is it because of your peoples behaviour when tools are lost,i.e. do they report it OR is it to stop tools being lost ?
If its the latter,it won't work,no matter how expensive the system you get. If its the former,that is, your people arn't behaving in the right way, then your just treating the symptom & need to look at your culture,the reason your people arn't displaying correct behaviour. How have people been treated when they have lost tools in the past ?
Why not a toolbox inventory list checked on task completion,easy & cheap.