YEs, it is just as easy as flashing a bootloader.
However, for flashing a sketch, you just choose the option "File -> Upload using programmer" in the IDE (or press Ctrl + Shift + U)
In this regard, use the UNO (DIP) or a UNO SMD as a Arduino ISP is exactly the same thing: the pins are the same, the connections are the same, the ISP sketch is the same. Don't worry.