I work full time and, until this past month, so did my husband. The days when I work, I am gone from 4 am to at least 6 pm. We have been able to manage our bengal quite nicely between the two of us. When we first got him, I was off work for about a week and a half. Being home so much allowed us to develop a strong bond. I am definitely "mother cat".
Quasar is highly energetic but, when we are not home, I think he probably sleeps a lot. We have yet to come home to anything truly destroyed. The closest ever was a chewed up toilet paper roll.
On the other hand, we make sure (now) that all the bathroom doors are closed and anything in which he might show interest that is breakable and valuable to us is out of his reach.
When I come home from work, I play actively with him for as long as he likes to wear out some of his energy.
I only work 3 days/week so am able to spend more time with him on my days off. We go for walks, camping, and sometimes just loll about the house together (if hubby's not home).
I would not discourage someone from getting a bengal cat simply because they are at work. Perhaps, as some have suggested on this board, two kittens would be a good alternative but we have done very nicely with one.
We have a dog. Quasar and Kyenta are best buddies but K-dog is outside when we are not home so Q-cat is certainly not amusing himself with her. He is always happy and excited to see both me and the dog when I get home though. I wouldn't say Quasar is in any way deprived.