Zend certified PHP/Magento developer

Installing “bootable USB” programs (Gparted, Clonezilla, Memtest, etc.) to internal drive partitions – Bad idea?

Is there any reason why it might be a bad idea to take programs that are typically installed as bootable USB drives and instead create an appropriately sized partition for each of them on the internal drive? The obvious upside is that they would always be present, no hassle of keeping track of thumbdrives; it’s basically just multibooting at this point. These programs also don’t tend to take up very much storage space, so I don’t imagine that it would be a significant loss of space on the internal drive.

Are there any obvious downsides that I haven’t considered? (Besides the worst-case “internal drive corruption” situation, for which I would want to make a separate rescue disk regardless)