The current wallet is functional for transfers and many other features "work", but there are often some nuances that you need to be aware of due to bugs in the UI.
If you have not practiced on our test network I do not recommend using advanced features or issuing any assets.
Asset registration fee & precision can be confusing... if you are not careful you will pay too much and create an asset with an unexpected share supply / precision.
Clearing pending transactions could cause you to lose important information from your transaction history
Names are not transferrable, no point in squatting...
This network is still a baby with many rough edges. It is good enough to make BTSX liquid and for the basic use cases. This is a Pre-1.0 product.
Overall I think the network is safe and you are unlikely to lose a balance "forever", but you may have display issues and other bugs that make it appear like your balance is lost.