Yes, careful- clouds can be unpredictable and suddenly the sun pops out in strength though a hole in the cloud cover. Many of us recall Birna's Venus transit image that was saved to the card before the sensor went up in flames! At least with mirroless cameras, eyesight will not be damaged by looking through the viewfinder.... A 4x4" piece of Baader AstroSolar OD 5 film is cheap, provides the best quality, and is much less costly than a camera and lens replacement.
The definition of the sun is quite good in you shot, Akira, in spite of the diffusion by the clouds. How short did you have to go on the shutter speed?