Cooperate with 'Field Conditional States'?

Crosslinking with similar discussion over at that other module:
#2278799: Compare conditional fields and field_conditional_state module

Quotes:

"I first try with "conditional fields", it works great at first.

The visibility logic is very complex, "conditional fields" works very well at simple case.
It does not work very well at following 3 case:
1, OR / XOR does not work as my expectation.
2, Does not compatible with my custom theme.
3, Does not support multi choice.

I try field_conditional_state module, and hope that it could solve my problem, it does not work at all.
I report the bug at https://drupal.org/node/2277477, and got a quick reply. After apply the patch, it works great,

It solve the problem that I encounter with "conditional fields" module.
1, OR / XOR work correctly as my expectation.
2, compatible with my custom theme.
3, support multi choice.

The config is simple and easy to use, There is one fault of "field_conditional_state":
I have to click the save button again and again to show the next step's form element.

Hope field_conditional_state could replace "conditional fields" module in the future."

And:

"I would be interested to here more about the similarities and differences between the modules.

- Both modules have the same functionality, it seems
- Both modules utilize the States API (in D7)
- conditional_fields has a much larger user base
- field_conditional_state has a stable release

Are there any further differences in functionality, or implementation/design?
In other words, which module should I choose? And could/should the projects perhaps merge?"

FYI - Somewhat relevant (this module queue):
#519076: Integrating Conditional Fields with Workflow / Workflow Fields

The module here seems to be dead.