@Longhatruong
Since you were talking about Bell fighting Ais, hence the topic of whether Bell could charge Argonaut or not against her, I assumed you meant that Bell was more powerful than anyone at his level in terms of combat; but if you limit it to mere status then yes, it is reasonable to assume that, although we could not be completely sure because there is no official confirmation; specifically in extreme cases, for example: if Bell has stats at 0, would he greatly exceed the status of someone with stats at S? I personally require an express demonstration of this to be categorically sure.
On the other hand, obviously chanting and charging are not the same, but the principles involved are very similar, namely: having enough mobility to be able to evade attacks, being able to withstand pain in case of trauma without losing the process, being able to attack and/or block while executing the action, being able to divide concentration in the 2 actions (evasive maneuvers and charging/chanting). Anyway, I think you will understand my point about why the principles of concurrent chanting are applicable to concurrent charging.
As a disadvantage of concurrent charging is the fact that you mention, Bell would have to charge with one hand, probably the left one, to have his dominant hand free to attack or block; a complication but if he focuses on evasive maneuvers, the fact of not being able to use his left hand during the charge is not something that totally invalidates the viability of the technique.
As an advantage is the fact that chanting requires much more mental effort than charging, the magician has to be concentrated on the verse, while charging is as simple as breathing, so the concentration can be much more focused on the battle than that of a magician who has to worry about not causing a will-o'-the-wisp.
Because of the above, I consider that if concurrent chanting is feasible in battle, logically concurrent charging should also be.