I think listing figures like hundreds of bitcoins could easily mislead or confuse people. Probably should be listed in fiat as well for the reasons I mentioned before.
Mentioning amounts in dollars just doesn't sound right on a Bitcoin forum. May I suggest using
an image, where you set the amount in dollars, and it shows Bitcoins. Example: $1000=

.
The down side is that it gives weird looking amounts, but it's updated on each reload.
But that isn't an accurate representation either especially if you never held that amount in bitcoin. Not everything has to be denominated in bitcoin either, especially when the value fluctuates so much and that's why a fiat value gives a much better and accurate representation and why it should be represented here. If you held £10k in bitcoins then it's the £10k that is the pertinent figure and that's what others should be judging you on.
This is a Bitcoin forum, not a fiat forum. If someone is being mislead by prices being given in Bitcoin, or feels mislead by it, should not call himself a bitcoin enthusiast and either educate himself so that he no longer feels mislead, or look for another hobby.
Saying that paying 100 Bitcoin at any point in time isn't an accurate representation is like saying that stealing 100 in 2016 is not a smaller crime than stealing the same amount in 2017. If you hold a certain number of bitcoins, you hold a certain number of bitcoins.