A few years ago I built a bike up from spare parts for Mrs stAn to use on the odd occasion.
At the same time I had just about finished building one of my own bikes. I had decided I wanted some black Raceface bars. Coincidently her bike also needed some bars.
I popped off to my lbs and purchased some black Raceface Diabolous bars for myself and a cheap as chips,silver,Trans-X bar.
when I got home she took intrest in both sets of bars and said she wouldlike the blackones on her bike -I replied,'..no,they're for my bike.' She then asked what the difference was - nothing except ones silver and ones black. This went on for some time with her persistently asking for the black bars to be fitted to her bike.
Eventually I had to fess up and tell her mine were actually a lot better and a lot more expensive. To which she replied 'Yes I know. I can tell the difference between a piece of crap etc. etc. I just wanted to see how you would justify it all'
So,be careful. Ask yourself do they not know what you are up to,or is it that they do know but don't really give a sh#t ?