Interesting variety of opinions 
What actually happened was I took the plunge - sat with $50.
For those wondering, the felter-fish at NL10 turned out to also be an ATM at NL50, although he was alot harder to stack. He wasnt willing to shove $30 nearly as easily as he was $10 in 10c.
Playing standard TAG, I left the table an hour later when the fish did with just over $80.
To answer re deposits, I can easily dump a few hundred RL$ in if the mood strikes (which is why ive played BSS NL10 since my PS roll) so I guess the BRM pressures wernt the same as on someone who has $220 and thats all he has, end of story... though id be annoyed to have to deposit again as ive already thrown $50 in for the 1st deposit bonus.
Unfortunately the night swung down (id like to say varience, but stacking for 2p from a freeplay BB is bad play) after this and left me at about $225. I need to make a mantra - I will not play for stacks when I hit 2p from a BB freeplay! (Caught 2p vs set across my top p twice... who limps TT from late position... honestly...
)
Next time I see him on NL50 I think ill leave him be and continue L2P NL10. Next goal - increasing past 4 tables!