I've searched and can't find info that this is out there but IMO would be a HUGE addition to an Expense Tracking App.
I currently use evernote to capture and keep a photo copy of my receipts, but an app that would track my expenses and give me the option to snap a quick photo of the receipt with my camera would be "worth it's weight".
I recommend upgrading to the latest version of ProOnGo Expense today at www.ProOnGo.com. The latest version contains a lot of bug fixes\feature requests from customers (you can send requests straight from ProOnGo from the 'Help and Support' menu item).
ProOnGo is also looking to sign up people for a private beta if they need to fax expense reports. The new fax feature will allow you to fax expenses straight from your phone to a fax machine. Please contact [email protected] for more info.
One tip: in BlackBerry options, ProOnGo Expense (and other apps you trust) will run a lot more smoothly if you Edit your BlackBerry options\permissions to 'Allow' ProOnGo.