By the microSD form factor, you can use it without problems in other equipment, an adapter is usually so that almost always worth at a not so big price difference, a MicroSD card.
So by phone where they can easily be plugged so rich, to the digital camera with adapter, it is actually very versatile.
Speed disadvantages are to me anyway not noticed with my Canon PowerShot SX110.
Compared I have with the "big" SDHC card from the same manufacturer.