The initial pull off the ground may get dicey.. Knowing how the 60Bs AFCS worked, it COULD be done, but if it does not pull off smoothly, I'd be concerned about dynamic rollover, or possibly ground resonance.
When I have taken off/landed when brownout was a possibility/certainty, I brought up the "Doppler Needles" that showed me how I was moving in relation to the ground. Not perfect, never had to use them, but if I got "surprised" and the cloud caught me before I got down/into forward flight it was another SA tool in my toolbox.