Yes, I trade all robots in the same account. Obviously this seems to be risky, but
1) the portfilio is managed actively, under certain market conditions some robots are not allowed to run or allowed to run with lower risk only. One example: Wallstreet be will turned off or to lower risk if I expect a trend reversal (which will be true in the next couple of days).
2) I already withdrawn nearly the amount I deposited into the account, so this is free money for me.
3) I try to combine the robots with a verly low correlation or better a divergence (example: Erio's Earner vs. Wallstreet/FX Combo Strategy 1 seems to be perfect).
GPS is not suicidal if you don't run it with default risk settings. I risk 1% of account and if GPS is going into recovery mode (with it never did for me) I will risk 5% of account.
And last but not least it is not as risky as all those crazy martingale strategies such as Envy or Forex Hacked.